2004/01/31 by R. Vanderspek, T. Sakamoto, C. Barraud +41 · 6 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics #Component (thermodynamics) #Gamma-ray burst #Gamma-ray bursts and supernovae #Optics #Physics #Pulsars and Gravitational Waves Research #X-ray #astro-ph
paper · pdf · doi:10.1086/423923
published as Astrophys.J. 617 (2004) 1251-1257 · 22 pages, 5 figures, to be published in ApJ 617, no. 2 (10 December 2004). Referee comments have been incorporated; results of improved spectral analysis are included
arxiv created 2004/12/08 · openalex publication_date 2004/12/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
An exceptionally intense gamma-ray burst, GRB 030329, was detected and localized by the instruments on board the High Energy Transient Explorer satellite ( HETE ) at 11:37:14 UT on 2003 March 29. The burst consisted of two ~10 s pulses of roughly equal brightness and an X-ray tail lasting more than 100 s. The energy fluence in the 30-400 keV energy band was S γ = 1.2 × 10 -4 ergs cm -2 , making GRB 030329 one of the brightest GRBs ever detected. Communication of a 2' error box 73 minutes after the burst allowed the rapid detection of a counterpart in the optical, X-ray, and radio and the ensuing discovery of a supernova with most unusual characteristics. Analyses of the burst light curves reveal the presence of a distinct, bright, soft X-ray component underlying the main GRB; the 2-10 keV fluence of this component is ~7 × 10 -6 ergs cm -2 . The main pulses of GRB 030329 were preceded by two soft, faint, nonthermal bumps. We present details of the HETE observations of GRB 030329.